Comment on The Inside of Sensirion's SCD4x
asbestos@lemmy.world 5 days ago
Wow, thanks for posting this. I use these sensors and I never knew what was inside other than the principle they’re based on. I also use SHT41 in conjunction and both the SDC40 and SHT41 show almost the exact same temperature and humidity values which is now easily explainable by the fact there’s a SHT40 inside this CO2 sensor! Awesome!
Sal@mander.xyz 5 days ago
I’m happy to share and glad someone else finds it interesting too :D
I also use SHT41 for other projects. It is a very nice sensor. I made an incubator with PID control and tested multiple different sensors, and the SHT41 was my final choice. Responds very fast and its accuracy is excellent.
In my mushroom chamber I have found out that CO2 is not actually an important control variable because the humidity is what changes the fastest and blowing humid air through the chamber brings the CO2 down anyway. So I would probably be able to get away with the SHT41, but measuring CO2 is just fun.